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“Hi,

This is all very very interesting.

I am actually interested in a very related use case.
So the idea is that
1. when the "wifi hotspot" is active that also a simple website is active on the raspberry pi that allows to set/change the wifi network SSID, passport (maybe also its static IP address). So by connecting to the wifi hotspot and navigating to that local website you can modify the wifi network settings.
2. I can create that simple website using node-red.
3. but then I need a way (or script) that allows to change or add those new wifi network settings so that next time it is rebooted that it tries to connect using those wifi network settings.

So this makes it possible to take your headless raspberry pi along and get it easily connected to any wifi network.